Analysis

  • max time kernel
    144s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-05-2024 23:33

General

  • Target

    2024-05-22_d446f151700cd528ac54073be4571d3c_cryptolocker.exe

  • Size

    96KB

  • MD5

    d446f151700cd528ac54073be4571d3c

  • SHA1

    24aed672873c53337f7101ed3d1d22ec3f38e089

  • SHA256

    01680dc0824125d792cb30fce5e8299815e6357ff7ea291f70a3bd0d04a687cb

  • SHA512

    e83f24fc5aab1b1f6cbcd1cdd71cdec184520c27f7f3ee830bc25121621a598424bc9c5219db2493e9ee57357b9bb97457e2e63729a9b5294a8ed314de89128a

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRXrZSUfFKazNclMjNUvAcC:xj+VGMOtEvwDpjubwQEI8UtzNcO8AcC

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 5 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-22_d446f151700cd528ac54073be4571d3c_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-22_d446f151700cd528ac54073be4571d3c_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4964
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:4804

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\misid.exe

    Filesize

    96KB

    MD5

    36600251b7db43ab581d5ef5c5574ce9

    SHA1

    3c1f9d6b7fa1415863e3cf41c1ee239628c32027

    SHA256

    4062f6acc914136cede597351b3913b68250f5670414c7b4c906b57f43dceba1

    SHA512

    336856bc362e344c9d2d09048bd2de2bbb58185aa589592ae0c52f7ae3f97412678754d7dbc3df78c278265819b1fb51bfb2f5953bc7f0e5018aa342f782958f

  • C:\Users\Admin\AppData\Local\Temp\misids.exe

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/4804-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4804-26-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/4804-20-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/4804-49-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4964-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4964-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/4964-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4964-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4964-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB